Journal
MATERIALS
Volume 14, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/ma14123223
Keywords
cobalt-doping; microcrystals; absorption; antibacterial; synthesis
Categories
Funding
- International Scientific Partnership Program ISPP at King Saud University [ISPP-20154(1)]
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Cobalt-doped zinc oxide microcrystals were synthesized via hydrothermal method, showing increased absorption and significant antibacterial activity against gram-negative bacterial strains.
Cobalt (Co) doped zinc oxide (ZnO) microcrystals (MCs) are prepared by using the hydrothermal method from the precursor's mixture of zinc chloride (ZnCl2), cobalt-II chloride hexahydrate (CoCl2 center dot 6H(2)O), and potassium hydroxide (KOH). The smooth round cylindrical morphologies of the synthesized microcrystals of Co-doped ZnO show an increase in absorption with the cobalt doping. The antibacterial activity of the as-obtained Co-doped ZnO-MCs was tested against the bacterial strains of gram-negative (Escherichia coli, Klebsiella pneumonia) and gram-positive bacteria (Staphylococcus aureus, Streptococcus pyogenes) via the agar well diffusion method. The zones of inhibition (ZOI) for Co-doped ZnO-MCs against E. coli and K. pneumoniae were found to be 17 and 19 mm, and 15 and 16 mm against S. Aureus and S. pyogenes, respectively. The prepared Co-doped ZnO-MCs were thus established as a probable antibacterial agent against gram-negative bacterial strains.
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